300  
CDUS45 KRIW 200728  
CLIRKS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT SUN APR 20 2025  
   
...............................  
 
   
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR APRIL 19 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1948 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 46 5:29 PM 75 1989 54 -8 50  
MINIMUM 15 6:06 AM 7 1966 30 -15 22  
AVERAGE 31 42 -11  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.81 1993 0.03 -0.03 0.00  
MONTH TO DATE 0.26 0.53 -0.27 0.11  
SINCE MAR 1 1.49 1.11 0.38 1.27  
SINCE JAN 1 1.75 1.86 -0.11 1.74  
 
DEGREE DAYS  
HEATING  
YESTERDAY 34 23 11 29  
MONTH TO DATE 355 475 -120 438  
SINCE MAR 1 1229 1436 -207 1424  
SINCE JUL 1 6450 7226 -776 6732  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 10.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 7:00 AM  
LOWEST 31 5:00 PM  
AVERAGE 62  
   
......................................................  
 
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 79 1989  
MINIMUM TEMPERATURE (F) 30 6 1966  
 
SUNRISE AND SUNSET  
APRIL 20 2025.........SUNRISE 6:28 AM MDT SUNSET 8:03 PM MDT  
APRIL 21 2025.........SUNRISE 6:27 AM MDT SUNSET 8:04 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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